Unless you specify otherwise, when you export a sliced Fireworks document, what you're actually exporting is an HTML file and its images.

Fireworks generates pure HTML that can be read by most web browsers and HTML editors. There are a variety of ways to export Fireworks HTML:

By default, Fireworks specifies UTF-8 encoding when you export HTML, which ensures that the characters in the HTML file will be displayed correctly for all languages.

You can also export HTML as Cascading Style Sheet (CSS) layers and XHTML.

To define how Fireworks exports HTML, you use the HTML Setup dialog box. These settings can be document-specific or used as your default settings for all HTML that Fireworks exports.